Home / 28,172.99-38,878.66-16,236.22

Finding the Fourth Proportional to 28,172.99, 38,878.66 and 16,236.22

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Solution

The fourth proportional to 28,172.99, 38,878.66 and 16,236.22 is: 22,405.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,172.99 : 38,878.66 = 16,236.22 : x
  2. Step 2: Convert to fraction form
    28,172.99/38,878.66 = 16,236.22/x
  3. Step 3: Cross multiply
    28,172.99x = 38,878.66 × 16,236.22
  4. Step 4: Simplify right side
    28,172.99x = 631,242,477.07
  5. Step 5: Solve for x
    x = 631,242,477.07/28,172.99
  6. Step 6: Final answer
    x = 22,405.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.